https://www.arenakorea.com/arena/article/35480

https://www.hankookilbo.com/News/Read/201708031678281782

http://news.heraldcorp.com/view.php?ud=20170614000503

https://www.seoul.co.kr/news/newsView.php?id=20170605019016&wlog_tag3=naver

https://www.hankookilbo.com/News/Read/201706030473484439

http://news.kmib.co.kr/article/view.asp?arcid=0923758274&code=11131100&cp=nv

https://www.fnnews.com/news/201706011208088310